Kind of a high rolly card, on one hand, your opponent not being able to clear this could be extremely useful but the 50% could not go off, which wouldn't be too optimal. All in all though, a interesting card, I likey.
Very crazy effect, I quite like it. Kibler had to run Crystallizer to give his heal Paladin something to heal. With this, you have plenty to heal. Another synergy I see is in wild with Reno, instantly gaining tons of armor and then healing back to full.